//console.log('hello world');
//var a=1;
/*var eid='1', ename='无聊',dex='20',birthday='19990101',salary='e';
console.log(eid,ename,dex,birthday,salary);*/

	/*var r=10;
	const π=3.14;
	var C=2*r*π,S=π*r*r;
	console.log(C,S);
	
	var a=1,b=2,c=b,b=a,a=c;
	console.log(a,b);
	*/
   function zcmj() {
   var input = document.getElementById("number").value;   //获取用户在Info上输入的值
   var p=3.14
    c=(input*p*2)
    s=input*input*p
    console.log(c,s);
    document.write('周长='+c,'&nbsp'+'面积='+s);	
	}
	
	